Missouri consumers will soon be able to buy motorcycles on Sundays. Gov. Jay Nixon signed legislation Monday that will lift a ban on Sunday sales of motorcycles, all-terrain vehicles, personal watercraft and other items typically sold by power-sports dealers. Like most Missouri legislation, the measure is scheduled to take effect Aug. 28. The legislation was championed by motorcycle riders and at least one Harley-Davidson dealer from the Kansas City area, who told lawmakers that he was losing Sunday business to a competitor in Kansas. The Missouri legislation does not repeal the state's ban on Sunday sales of cars and trucks.